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So far it’s a solo ride.

React Sunglasses

Imagine if your sunglasses could adapt instantaneously to changing light conditions, shifting tints to keep you ahead of the road, helping you to stay focused, more relaxed and ready for what's next. Thanks to React, you can forgo imagination in place of a cutting-edge pair of shades that do all of the above. Stylish, solar-powered, Swiss-made sunnies that shift tints in 0.1 seconds to usher in a new era of cycling eyewear.

React is an arm of Optrel Sports, maker of some of the world's finest welding helmets, goggles and systems. The team tasked with bringing Optrel's infra-red-reading, solar-powered sunglasses to market spent nine years developing the tech, securing patents and many testing miles along the way. Their signing of über-fast Stefan Küng as a brand ambassador speaks to their success. As does the reaction of anyone who tries a pair. Amazed doesn't quite cover it.

You may have tried 'transition' lenses, but nothing this fast and so perfectly finessed.